aws-elb-cloudformation-reference-policy

example.js

// https://forums.aws.amazon.com/thread.jspa?threadID=169448
{
  "Listeners": [
    // ...
    {
      "InstancePort": 8080,
      "InstanceProtocol": "http",
      "LoadBalancerPort": 443,
      "Protocol": "HTTPS",
      "PolicyNames": [
        "ELBSecurityPolicyName"
      ],    
    }
  ],
  "Policies": [
    {
      "PolicyName": "ELBSecurityPolicyName",  // this name is what you need to specify under PolicyNames
      "Attributes": [
        {
          "Name": "Reference-Security-Policy",
          "Value": "ELBSecurityPolicy-TLS-1-2-2017-01"  // one of the predefined policies
        }
      ],
      "PolicyType": "SSLNegotiationPolicyType"
    }
  ]
}